共查询到20条相似文献，搜索用时 343 毫秒
1.
对视黄醇结合蛋白4在胰岛素抵抗形成中的作用及其与运动关系的研究进展进行了综述研究。视黄醇结合蛋白4是将肥胖、2型糖尿病胰岛素抵抗联系起来的脂肪因子,视黄醇结合蛋白4遗传多态性亦与胰岛素抵抗的发生关系密切。视黄醇结合蛋白4能够通过抑制胰岛素信号蛋白诱导胰岛素抵抗。运动能够降低正常体重、肥胖、2型糖尿病对象的视黄醇结合蛋白4,改善胰岛素抵抗。 相似文献
2.
浅谈体育运动对糖尿病防治的功用 总被引：4，自引：0，他引：4
本文在分析运动可动员肌肉GLUT4蛋白吸收葡萄糖、改善抗胰岛素现象和提高身体的胰岛素敏感度等防治机理的基础上,提出了防治糖尿病的运动方式,以期为人类提供新的糖尿病防治手段及健康的生活方式。 相似文献
3.
PTP-1B是1988年被分离的一种蛋白质酪氨酸磷酸酶,它通过对胰岛素受体激酶活化部位(IRK)酪氨酸残基(pTyr)的去磷酸化来介导胰岛素信号.蛋白质酪氨酸磷酸化在信号转导的过程中起着关键作用,它通过在信号传导中的负调节功能导致个体胰岛素抵抗,从而发生糖脂代谢紊乱,进一步形成2型糖尿病.我国现有糖尿病患者约4000万,其中90%以上为2型糖尿病.21世纪2型糖尿病将成为中国、印度等亚太人口大国的流行病.随着对PTP-1B作用机理认识的逐渐深入,研究者发现它是2型糖尿病治疗的一个理想靶位点,为2型糖尿病发病机理和预防治疗研究提供了一条新的线索.该文综述了PTP-1B在基因结构、基因产物和生物学功能等方面的最新研究进展. 相似文献
4.
观察中药葛根、丹参对实验性2型糖尿病大鼠胰岛素抵抗的作用。用高热量饲料加小剂量链脲佐菌素（STZ）（30 mg/kg）注射复制2型糖尿病大鼠模型,经葛根、丹参治疗6周,测定大鼠空腹血糖、血脂、血清胰岛素等含量,并计算出胰岛素敏感指数;葛根能显著降低糖尿病大鼠空腹血糖、血脂的含量,提高胰岛素敏感指数;葛根通过改善糖脂代谢,提高胰岛素的敏感性,具有改善实验性2型糖尿病大鼠胰岛素抵抗的作用。 相似文献
5.
Bo ZHU Zhixin MA Yuning ZHU Lei FANG Hong ZHANG Hongwei KONG Dajing XIA 《Journal of Zhejiang University. Science. B》2021,22(3):223-232
Gestational diabetes mellitus(GDM) is characterized by glycemia and insulin disorders.Bile acids(BAs) have emerged as vital signaling molecules in glucose metabolic regulation.BA change in GDM is still unclear,which exerts great significance to illustrate the change of BAs in GDM.GDM patients and normal pregnant women were enrolled during the oral glucose tolerance test(OGTT) screening period.Fasting serums were sampled for the measurement of BAs.BA metabolism profiles were analyzed in both pregnant women with GDM and those with normal glucose tolerance(NGT).Delivery characteristics,delivery gestational age,and infant birthweight were extracted from medical records.GDM patients presented distinctive features compared with NGT patients,including higher body mass index(BMI),elevated serum glucose concentration,raised insulin(both fasting and OGTT),and increased hemoglobin A1 c(HbA1c) levels.Higher homeostasis model assessment of insulin resistance(HOMA-IR) and decreased β-cell compensation(i.e.,oral disposition index(DIo)) were also prevalent in this group.Total BAs(TBAs) remained stable,but glycodeoxycholic acid(GDCA) and taurodeoxycholic acid(TDCA) levels declined significantly in GDM.GDCA was inversely correlated with HOMA-IR and positively correlated with DIo.No obvious differences in clinical outcome between the GDM and NGT groups were observed.However,GDM patients with high HOMA-IR and low DIo tended to have a higher cesarean delivery rate and younger delivery gestational age.In conclusion,GDCA provides a valuable biomarker to evaluate HOMA-IR and DIo, and decreased GDCA levels predict poorer clinical outcomes for GDM. 相似文献
6.
探讨运动对糖耐量减低（IGT）患者血清抵抗素、脂联素和胰岛素敏感性的影响．56名中老年IGT患者随机分为3组：对照组（18例）、健步走组（19例）、健步走＋抗阻力组（19例）,健步走组采取24周健步走运动处方锻炼．健步走＋抗阻力组采取健步走和抗阻力运动相结合的运动处方锻炼,运动干预前后采用放射免疫法测定血清胰岛素、抵抗素、血清脂联素。计算胰岛素抵抗指数（HOMA-IR）．健步走组、健步走＋抗阻力组的抵抗素、脂联素和HOMA-IR与对照组相比均有极其显著性差异（P〈0．01）;健步走组与健步走＋抗阻力组的抵抗素和HOMA-IR与健步走组相比无显著性差异（P〉0．05）,脂联素比较有极其显著性差异（P〈0．01）．运动可改善IGT患者的代谢水平．健步走＋抗阻力运动对脂联素的影响较单纯健步走更为明显． 相似文献
7.
目的:观察脂肪肝大鼠在生化、病理、脂肪代谢、细胞因子、胰岛素及瘦素各方面指标的变化.方法:雄性Wistar大鼠22只,按体重层次随机分为2组,对照组(A)11只,脂肪肝组(B)11只.对照组饲以普通鼠饲料,脂肪肝组饲以高脂饲料.8周后,全部处死,取血及肝组织,测定血中AIT、AST、TG、CHO、INS、FBS、FFA、Ieptin、II-6、TNF.肝组织匀浆测定肝组织TC,TG,SOD、MDA,观察肝脏组织学变化.结果:脂肪肝大鼠存在明显脂肪代谢紊乱,肝功能异常,胰岛素抵抗及瘦素表达增高;细胞因子升高.结论:实验性高脂饮食脂肪肝大鼠存在瘦素抵抗及胰岛素抵抗. 相似文献
8.
Research on the protection effect of pioglitazone for non-alcoholic fatty liver disease （NAFLD） in rats 总被引：4，自引：0，他引：4
Objective： The prevalence of non-alcoholic fatty liver disease （NAFLD） has markedly increased. Insulin resistance has been implicated in the pathogenesis of NAFLD. This study was aimed at observing the relationship between insulin resistance and NAFLD, and evaluating the role of pioglitazone （PGZ） acting as insulin-sensitizing agents in the prevention and treatment of rat fatty liver induced by high fat feeding. Methods： The rats were separated randomly into 6 groups： model group Ⅰ were fed high fat diet for 8 weeks, PGZ prevention group were given PGZ 4 mg/（kg.d） simultaneously, while control group Ⅰ were fed normal food for 8 weeks; model group Ⅱ were fed high fat diet for 16 weeks, PGZ treatment group were given PGZ 4 mg/（kg.d） orally simultaneous with high fat diet for 8 weeks after high fat feeding for 8 weeks, control group Ⅱ were fed normal food for 16 weeks. The rats were sacrificed after 8 weeks and 16 weeks respectively. Liver weight, body weight, serum activities of alanine aminotransferase （ALT）, aspartate aminotransferase （AST）, alkaline phosphatase （ALP）, tumor necrosis factor alpha （TNF-α）, fasting blood glucose （FBG）, fasting plasma insulin （FINS）, HOMA （homeostasis model assessment） insulin resistance index （HOMA-IR）, and the liver histology of rats of all groups were assayed. Results： After 8 weeks, the liver in model group Ⅰ showed typical steatosis, accompanied with mild to moderate lobular inflammatory cell infiltration, liver indexes and serum levels of ALT, AST, ALP, TNF-α were significantly increased （P〈0.05） compared with control group Ⅰ. Whereas, the degree of hepatic injury was attenuated in PGZ prevention group, liver indexes and serum levels of ALT, ALP were significantly decreased （P〈0.05） compared with model group Ⅰ. After 16 weeks, notable steatosis, and lobular inflammation were observed in model group Ⅱ rat liver, while the degree of hepatic injury was attenuated in the PGZ treatment group. Liver index, serum levels ofALT, AST, ALP, FINS and HOMA-IR were significantly increased （P〈0.05） in model group Ⅱ compared with control group Ⅱ. Whereas, in PGZ treatment group, serum levels of AST and FINS showed decreasing tendency, liver indexes, serum levels of ALT, ALP, TNF-α and HOMA-IR were significantly decreased compared with model group Ⅱ. Conclusion： Insulin resistance plays a role in the pathogenesis of NAFLD in rats. Pioglitazone can attenuate insulin resistance and biochemical and histological injury in high fat-induced fatty liver in rats. 相似文献
9.
胰岛素抵抗是指胰岛素效应细胞不能对正常剂量的胰岛素产生相应的反应.研究表明胰岛素抵抗与慢性炎症相关,而且是导致II型糖尿病的主要原因.在分子水平上,胰岛素抵抗的发生与多种炎症因子相关,其中白细胞介素-6（IL-6）是最为关键的一个因子.主要由脂肪组织中分泌的IL-6进入肝细胞中使得IL-6浓度显著升高.IL-6则通过STAT3—SOCS3信号通路影响胰岛素受体信号通路的传导从而引起胰岛素抵抗.对胰岛素分子机制的理解有助于从分子水平上设计和发现治疗胰岛素抵抗药物或方法. 相似文献
10.
目的探讨2型糖尿病（T2DM）患者胰岛素抵抗与微量白蛋白尿（MAU）的相关关系。方法将302名RDM患者根据尿白蛋白排泄率（UAER）进行分组。采用多因素相关和回归分析评价胰岛素抵抗指数（insulin resistance index,HOMA-IR）、李光伟指数（IAI）对UAER的影响。结果随着UAER的增加,HOMA—IR逐渐升高,IAI逐渐降低。多因素相关和回归分析显示,IAI与UAER显著负相关（P〈0．01）。结论2型糖尿病患者胰岛素抵抗是微量白蛋白尿的独立危险因素。 相似文献
11.
朱海燕 《泰州职业技术学院学报》2010,10(3):29-30,59
目的观察慢性充血性心力衰竭（CHF）患者的血胰岛素和糖代谢变化,并探讨依那普利对CHF患者胰岛素敏感性的影响。方法CHF患者69例,依那普利（n=37）（第一周10mg,1次／d,后三周20mg,1次／d）和地高辛（n=32）（第一周0．25mg,1次／d,后三周0．125mg,1次／d）,治疗前和治疗4周后检测空腹血糖（FPG）、空腹血清胰岛素（FINS）和空腹血清C肽（CP）水平,并计算出FPG／FINS比值、胰岛素敏感性指数IAI值[IAI=－ln（FPG×FINS）]作为机体胰岛素敏感性评价指标,分别比较两组患者治疗前后的胰岛素敏感性变化。结果治疗4周后,依那普利组CHF患者的胰岛素敏感性显著增加,而地高辛组患者胰岛素敏感性无显著变化。结论依那普利有改善CHF患者IR的作用。 相似文献
12.
肝病患者血清总胆汁酸测定的临床意义 总被引：1，自引：0，他引：1
伏小阳 《泰州职业技术学院学报》2010,10(3):27-28
目的探讨肝脏疾病临床诊断中血清总胆汁酸（TBA）测定结果的临床意义。方法在日立7600型全自动生化分析仪上检测272例肝病患者（急性肝炎98例、慢性活动性肝炎54例、肝硬化71例和肝癌49例）的血清TBA、ALT,并与健康对照组比较。结果各种肝病患者的TBA、AIT均显著升高。急性肝炎、慢性活动性肝炎TBA与ALT升高显著,敏感性高,但肝硬化、肝癌两项指标阳性率结果差异明显（χ^2=60．553,P〈0．001）：TBA阳性率高达90％以上,而ALT阳性率仅为20％左右。结论TBA测定对于监测慢性肝病,尤其是肝硬化的早期诊断价值很大,是一项很具实用价值高敏威性的肝功能诊断指标。 相似文献
13.
Xuan Zhou Jia-qi Li Li-jie Wei Meng-zhou He Jing Jia Jing-yi Zhang Shao-shuai Wang Ling Feng 《Journal of Zhejiang University. Science. B》2020,21(12):990
Disulfide-bond A oxidoreductase-like protein (DsbA-L) is a molecular chaperone involved in the multimerization of adiponectin. Recent studies have found that DsbA-L is related to metabolic diseases including gestational diabetes mellitus (GDM), and can be regulated by peroxisome proliferator-activated receptor γ (PPARγ) agonists; the specific mechanism, however, is uncertain. Furthermore, the relationship between DsbA-L and the novel adipokine chemerin is also unclear. This article aims to investigate the role of DsbA-L in the improvement of insulin resistance by PPARγ agonists in trophoblast cells cultured by the high-glucose simulation of GDM placenta. Immunohistochemistry and western blot were used to detect differences between GDM patients and normal pregnant women in DsbA-L expression in the adipose tissue. The western blot technique was performed to verify the relationship between PPARγ agonists and DsbA-L, and to explore changes in key molecules of the insulin signaling pathway, as well as the effect of chemerin on DsbA-L. Results showed that DsbA-L was significantly downregulated in the adipose tissue of GDM patients. Both PPARγ agonists and chemerin could upregulate the level of DsbA-L. Silencing DsbA-L affected the function of rosiglitazone to promote the phosphatidylinositol 3-kinase (PI3K)-protein kinase B (PKB)/AKT pathway. Therefore, it is plausible to speculate that DsbA-L is essential in the environment of PPARγ agonists for raising insulin sensitivity. Overall, we further clarified the mechanism by which PPARγ agonists improve insulin resistance. 相似文献
14.
Yue-qin Qiu Xue-fen Yang Xian-yong Ma Yun-xia Xiong Zhi-mei Tian Qiu-li Fan Li Wang Zong-yong Jiang 《Journal of Zhejiang University. Science. B》2017,18(6):492-500
The expression of the cell death-inducing DNA fragmentation factor α-like effector (CIDE) family including Cidea, Cideb, and Cidec was significantly increased in mouse and human models of obesity. However, there was less information on these genes’ expression in pigs. Here, we hypothesized that different fat accumulation between lean (Duroc×Landrace×Yorkshire gilts, DLY) and obese (Lantang) pigs was attributed to porcine CIDE-modulating lipid metabolism. Our data showed that Cidea and Cidec were expressed at a high level in adipose tissue, and at a relatively high level in skeletal muscle, whereas Cideb was mainly expressed in the liver in both breeds of pig. Lantang pigs had higher white adipose and skeletal muscle Cidea and Cidec mRNA abundance, and hepatic and muscle Cideb mRNA than DLY pigs. Lipid metabolism-related genes including sterol regulatory element binding protein 1c (SREBP-1c), hepatocyte nuclear factor-4α (HNF-4α), peroxisome proliferator-activated receptor γ coactivator-1α (PGC-1α), fatty acid synthase (FASN), diacylglycerol O-acyltransferase 1 (DGAT1), and DGAT2 showed a higher expression level in adipose tissue from obese pigs than in that from lean pigs. Lantang pigs exhibited higher mRNA abundance for liver SREBP-1c, HNF-4α, and PGC-1α, and higher skeletal muscle SREBP-1c, HNF-4α, PGC-1α, and DGAT2 expression, as compared with DLY pigs. However, the perlipin2 mRNA levels in adipose tissues, liver, and skeletal muscle were significantly lower in obese pigs than in their lean counterparts. Furthermore, plasma non-esterified fatty acid (NEFA), glucose, and triacylglycerol (TAG) levels were greater in obese pigs than in lean pigs. Finally, data from correlation analysis further found that CIDE mRNA expression was positively correlated with back fat thickness (BFT), abdominal fat mass (AFM), and the levels of NEFA, TAG, and glucose in the two breeds. Collectively, these data revealed that the porcine CIDEs possibly modulated lipid metabolism and contributed to the development of fat deposition and obesity in Lantang pigs. 相似文献
15.
Objective： To observe the value of HbA1c level evaluating the total daily basal insulin dose by continuous subcutaneous insulin infusion （CSII） in 268 patients with type 2 diabetes mellitus, Methods： 5-point capillary blood glucose was monitored in pre- and post-CSII and the insulin dose which could stabilize blood glucose was defined as the total daily dose of insulin, including basal and bolus total dose. Correlation between HbA1c level and total daily dose of insulin in patients with type 2 diabetes mellitus was analyzed. Correlation between HbA1c level and 5-point capillary blood glucose was also analyzed. Results： Obvious correlation was observed between HbA1c level and the basal total daily dose of insulin if HbA1c was more than 9.3% （r=0.635, P〈0.05）. The average of 5-point capillary blood glucose was best correlated with HbA1c and fasting blood glucose next best. Conclusion： HbA1c level can forecast basal total daily dose of insulin in CSII. 相似文献
16.
目的：研究IL-4mRNA和IL-4蛋白在哮喘大鼠CD34^＋细胞中的转录表达及孟鲁司特（montelukast,MK）对其表达的影响。方法：将SD大鼠随机分为3组：哮喘组、MK组和正常对照组。用卵白蛋白制备大鼠哮喘模型。应用双抗体夹心酶联免疫吸附试验测定血浆中IL-4和γ-干扰素（IFN-γ）浓度;用MiniMACS磁珠分选系统分离骨髓CD34^＋细胞;采用SYBRGREEN I荧光实时定量PCR法测定CD34^＋细胞中IL-4mRNA的相对表达量。采用免疫组化技术测定CD34＋细胞中IL-4蛋白的表达量。结果：哮喘组骨髓CD34＋细胞中IL-4mR．NA和IL-4蛋白的表达量高于其它各组（p〈0．01）;哮喘组除了IFN-1水平低外,IL-4浓度和嗜酸性粒细胞（EOS）绝对值都是三组中最高的（P〈0．01）;除哮喘组外,其余组的各项指标相近（P〉0．05）。IL-4mRNA表达量与IL-4浓度、Eos绝对值呈正相关（P〈0．01）,与IFN-γ浓度呈负相关（P〈0．01）。结论：哮喘大鼠骨髓CD34^＋细胞中IL-4 mKNA的表达增强;孟鲁司特可以下调IL-4mRNA的表达。可能成为其抑制哮喘气道炎症形成的重要机制之一。 相似文献
17.
梅晓霞 《金华职业技术学院学报》2012,12(3):87-89
目的：观察个体化饮食干预疗法对妊娠期糖尿病（GDM）的治疗作用;方法：将确诊为GDM的50例孕妇随机分为观察组及对照组,观察两组治疗前后的血糖水平及胰岛素用量等的变化;结果：出院时观察组空腹血糖（FPG）、餐后2小时血糖（p2hBG）、血糖迭标时每日胰岛素总量及住院期阍出现低血糖次数较对照组均有明显下降（P〈0．05）;结论：个体化饮食干预治疗对GDM患者血糖有较好的控制效果。 相似文献
18.
侯志敏 《河北职业技术学院学报》2009,(2)
葡萄糖代谢异常是2型糖尿病的主要病理生理改变,胰岛素依赖性和非胰岛素依赖性葡萄糖代谢通路的多个环节发生了异常改变,阐明2型糖尿病葡萄糖代谢异常的分子机制,对糖尿病的治疗和预防具有重大意义。 相似文献
19.
侯志敏 《廊坊师范学院学报(自然科学版)》2009,9(2):59-61
葡萄糖代谢异常是2型糖尿病的主要病理生理改变,胰岛素依赖性和非胰岛素依赖性葡萄糖代谢通路的多个环节发生了异常改变,阐明2型糖尿病葡萄糖代谢异常的分子机制,对糖尿病的治疗和预防具有重大意义。 相似文献
20.
Feng YF Yao MF Li Q Sun Y Li CJ Shen JG 《Journal of Zhejiang University. Science. B》2010,11(11):848-850
Fulminant type 1 diabetes is a recently discovered subtype of idiopathic type 1 diabetes, defined as diabetes with an extremely
rapid process of β-cell destruction and progression to hyperglycemia and ketoacidosis. In this report, we present a case of
fulminant type 1 diabetes in a 45-year-old Chinese woman, along with a review of the literature. The patient presented with
sudden onset of polydipsia and polyuria after flu-like symptoms. Findings on admission included a high blood glucose level
and ketoacidosis, but normal HbA1c level. The C-peptide stimulation test showed severe impairment of insulin secretion. Autoantibodies
to glutamic acid decarboxylase (GAD) were negative. These results are compatible with the diagnosis of fulminant type 1 diabetes.
Human leukocyte antigen-DR7 (HLA-DR7) was available in this case. It is concluded that this rapidly progressing type of diabetes
exists, and we propose that HLA-DR7 might be predisposed to fulminant type 1 diabetes in Chinese patients. 相似文献